Surly ECR 27.5+

Surly ECR 27.5+
  • Color: Blacktacular
  • Color: Blacktacular
  • Color: Blacktacular
  • Color: Blacktacular
  • Color: Blacktacular
  • Color: Blacktacular
  • Color: Beige Pantsuit
  • Color: Beige Pantsuit
  • Color: Beige Pantsuit
  • Color: Beige Pantsuit
  • Color: Beige Pantsuit
  • Color: Beige Pantsuit
Please select options


The ECR is Surly's answer to those times when you just need to escape to the woods for a while to get away from the humdrum of life. Those familiar with this steel mule know it’s designed around plus tires, previously of the 29” variety. A fully loaded 29+ bike is an excellent way to explore and get away for a while… if you’re of a certain stature that is. For smaller riders, it poses several challenges though. And no one wants new problems when they’re in the woods trying to escape old ones. To solve this, Surly redesigned the smaller sizes of the ECR to work with 27.5+ while the larger sizes are still equipped with 29+. All you medium specimens out there get your pick of the litter as Surly's offering that size in both options.

Other updates to the ECR include and are limited to: Gnot-Boost rear spacing and a killer new beige paint job. It retains the abundant accessory mounts that we all know and love like Surly Trip Guide for brakes and derailleurs, fender, rack, and Bill/Ted eyelets, and a Rohloff torque arm slot. The 27.5+ sizes also feature two sets of Three-Pack bosses. You’ve got lots of options to bring all your “necessities” with you and still have room for excess baggage if you’ve got it.


Frame Surly ECR, 100% Surly 4130 CroMoly steel. ED coated. Double-butted main triangle. TIG-welded
Fork Surly ECR, TIG-welded custom-butted 4130 CroMoly, non-suspension corrected, 1-1/8-inch steerer tube, 203mm disc brake clearance
Headset Cane Creek, 40 series
Axles Front: 9mm, bolt-on
Rear: 12x148mm thru-axle
Rims/Wheels Alex MD40
Hubs Front: Surly Ultra New Disc, Rear: Salsa
Spokes DT Swiss, stainless
Tires Surly Knard, 27.5 x 3.0, 33tpi
Crankset Surly O.D.
Chainrings 39/26
Bottom Bracket Surly Enduro
Chain KMC X10, Silver
Front Derailleur Shimano SLX FD-M661, Problem Solvers direct mount adaptor (31.8mm w/shim)
Rear Derailleur Shimano Deore RD-M615 SGS, 10-speed
Cassette/Rear Cogs SunRace, 10 speed: 11-40
Shifters Microshift SL-M10
Handlebars Surly Moloko, 31.8mm
Tape/Grips Velo lock-on
Stem HL Satori
Brake Levers Avid FR-5
Brakes Avid BB7, Centerline 180/160mm front/rear rotors
Saddle WTB Volt Sport
Seat Post Kalloy SP-342

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Beige Pantsuit / X-Small 708752163980 BK9170 SUR38973828S
Beige Pantsuit / Small 708752163911 BK9171 SUR38150346M
Beige Pantsuit / Medium 708752163843 BK9172 SUR383104D
Blacktacular / X-Small 708752190979 BK9130 SUR37619793S